A side note on buffeting, I just mounted a Cee Bailey shield(thanks again Vic), much better than Rifle, stock, Clearview GT, and I think a rode a Conc with a Gustafson. A properly sized Cee B moves a smooth stream of air above the shield, helping the air intakes on the helmet, and eliminating all of that wind noise. Another alternative is an extremely short shield, you get wind in the chest and face, but it is smooth, and less noisy than all of the above except the Cee B..
This is all in addition to wearing -30db ear protection. I wear an HJC mod helmet, not the quietest around. OK with the shield up, sun screen up or down.